Ments



Original Fil ed lay 19, 1919 v 2 Sheets-Sheet 1 l. II W VVVM A h M M... M 41%.. W A 1 a w 1 J k \uwi W 1. z W h r 1 v 7 m M H ,v w 6 v R 16,430 R. P. DE VAULT IOTION PICTURE APPARATUS Original Filed 1919 & n. 1. L 2 .L D. .m

2 Sheets-Sheet 2 Reitmd Sept. 21,1926.

nan: 2mm vs a comm-non or'nmmors.

Original application fled Kay 1010, Serial at. 835,685. reissue fled July 18, 1912? 1a. 1919, Serial [This invention relates to improvements in motion pictureap aratus.

My present app ication is an application forlthe reissue of my Patent No. 1,362,985, 1 3 dated December 21, 1920, granted on my divisional application Serial No. 335,665, filed November 4, 1919, as original application, Serial fil May 19, 1919.

The main objects of this invention are:

First, to provide in a motion pictureap paratus an improved'film driving and supporting means...

Second, to provide in a motion picture 15 apparatus a means for controlling the film as it is moved intermittently, stopping it and holding it steady at the instant the driving sprocket sto s, and at the same time allowing it to move eely when the sprocket 20 starts. j

Third, to provide in a motion picture apparatus an im roved film driving means aving these-a vantages ,.in which the wear on the film is minimized. 5

Further objects, and objects relating to structural details, will definitely appear from the detailed description tofollow.

I accomplish the objects of my invention by the devices and means described in the aocfollowing specification. The invention is clearly defined and ointed out in theclaims.

A structure whic ment of my invention is clearly illustrated in the accompanging drawin forming a [In part of this speci cat1on,-in w 'ch:

( Figure I is a side elevation of a structure einbod the features of my invention, parts ing. shown mainl in conventional pm and parts being b'ro en away.

Fig. II is a detail view mainly m vertical section on a line corresponding to line 22 ofFig.I.

Fi .IIIisafrontpe J I ura teorpicture- FigJV e a lon 'tudinil "ertui'e I to on a 'neco 4-4 of ig. III

'Fig..V 1s

i fth s pto line anddn thefilm. 4

is a da a. elevation of an "embodi- UNITED STATES] VAULT, OI'GKICAGO, m8, '10 am IOTION PIGI'UBE PROJECTOR COKPANY, OI CHICAGO, ILIIEN'OIE,

a division of my.

is a preferred embod1- nection with such drivin tion showing details of the ,msans;-for suptially ta Re. 16436 PATENT OFFICE.

ILLINOIS, ABSIGNOB, BY IESNE ASSIGN- IOTION-PICTUBE APPARATUS.

Io. 398.018. Dlvided and application fled November 4,? Original ratent- I- 1582385, dated December .1, 19. Application (01' Serial I0. 753%.

ment of my improvements as adapted to another ty of moving picture machine.

Fi I is a view corresponding to Fig. VI, s owing parts in another adjustment or position.

Fig. VIIIis a detail front view of the structure shown in Fig. VI and VII.

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents the frame of a movin picture machine, 2 the gear box or housing for the film drivi gearing and 3 the lens box. The "detailsz the shutter are notillustrated as they form no partof this invention.

The film gate 4 has a framing aperture 5'. The film gate is secured at the rear of the" lens. box b means of set screw 6. The film casing, an support are not, illustrated as suchparts form no art of this. invention.

The film sprocket is disposed at the rear side of the aperture gate and is rov-ided with teeth 8 to engage the perforations 9 of the film 10 which is of a well-known type.

The spindle 11 of the film sprocket is provided with the driven star wheel coacting with the Geneva sto drivin member 13, I,

in detail and\ is the subject matter of the claims of my said application for; Letters Patent and 1S IlOt, t erefore, described in detail herein. I

My improvements of this however' of particular value means as the started with the during the periapplication are, v or use in cond an driving sprocket and held ods of rest. .I rovide a (pair of resilient belts 14 erab y forms of coiled; springs. belts are supported by pulleys 15 and 16 58-.

sed at the ends ofithe gate, the lower puley -16 being dis d below the film dri i sprocket 7. It will. be observed that the r0 er lfihas its perimeter in a plane substanis instantly stoppe refsf surface 9 the aperture gate, and the same entlally with respect to the outer q the1r released position being indicated by dottedlines in Fig. I. The supports are held in their released or operative position by means of the springs 29 which engage the eccentric or boss like portions 29' on the supports so that the springs engaging op osite sides of either eccentrics or bosses ho d the supports in position.

These bets are supported by the pulleys so that their rear reaches yieldingly hold gainst' the aperture gate and against the film sprocket as the film travels across the same. The belts are driven by their engagement with the film sprocket so that their s ed is the same as the speed of the film an so there is no-surface friction of the belts on the film, and the film is fed so that the wear of the sprocket therein is nominal,. th'us greatly increasing the life of the film.

By this arrangement of parts, the film is held so that it may be fed step by step and very rapidl and at the same time is supported so t atit does not flutter and is stopped instantly when the driving sprocket stops and is notv injured by this rapid feed- Tn motion picture machines a this type it What I 1 11 s n is customary to cut ofl the light during objectionable flicker. It is customary to provide a shutter with interrupting parts causing further interruption of the light while the film is at rest and while this reduces the ronounced flicker it also reduces the illum'ma: tion upon the screen.

My improved film feeding means is such that the interruption can be eliminated and reduced in length thereby securing more illumination upon the screen and also better results in that the flicker is substantially eliminated. I

In the modification illustrated in Figs;

VI, VII and VIII,-I show an ada tation of my'nnprovements to a machine 0 the type in which the film driving arts are adjustable to' frame. the picture, t e aperture gate and film drivin sprockets being mounted on a frame supportedfi n slides .22 for vertical adjustment. The adjustment-lis accomplished by means of a lever 23 which is plvoted at 24 on the main frame 1 and slotted at 25 to engage apin 260i) the frame 21. Thefilm sprocket 'Z is mounted on. this frame as is bolts 14.

also the .upperi 'pulley 151m: the

interruption pulley 16 is mounted on a sup-- operative and lnoperative positions, the upper end of the support being tapered to coact with the. spring to secure this result.

Additional pulleys carried by the links or rocker 31 are arranged between the reaches of the belts in the plane of the gate aperture so as to more firmly press the inner reaches of the belt at this point. The

resiliency of the tension of the springs of which the belts are formed accomplish this. The upper pulley 15 is providedwith a friction means to prevent over-running of the belts consisting of the spring 32 which presses the friction disk 33 against the end of the pulley.

Adjustable and lock nuts 34 and 35 are provided for adjusting the tension of the 'spi'ingand thereby regulating the friction. 1 I have illustrated and described my invention in these two embodiments inorder to show the adaptability I or application thereof. I have not attempted to illustrate or describe other modifications and ada tations' which I contemplate and which might be desirable to adapt my improvements to certain types of machines as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as may be desired.

Having thus described 'my, invention, and desire to secure by Letters Patent is:

1-. In a motion picture apparatus of the class described, comprising an intermittently driven film, ture gate, a driving means for said film comprising a film sprocket disposed at the lower end of the ate, a air of belts formed of coiled spr1ngs,-pul eys for said belts disposed at the ends of said ate, thelower pulleys being disposed be ow said film sprocket so that the rear reaches of said belts yieldingl gate and'the fi m sprocket as ittravels over the same, said belts being driven by said film sprocket.

=3=class describe compri i an intermittent ly driven film, the combi'natio'nofan aper ture gate, a driving -'means for said, comprising a film sprocket disposed at the lower end of the gate, a air of belts formed of coiled sp'rings,'pul eys for said belts disposed at the ends ofsaid gate, the

lower pulleys being. disposed l'lJGlOW said the combination of an aper-' hold the film against the film sprocket so that the rear reaches of said belts yieldingl gate and the fi m th film sprocket, pivotedhold the film against. the sprocket as it travels over e same, said belts being driven by said supports for said 1 pulleys,

and springs for holding said supports in their operative positions.

3. In a motion, picture apparatus of the a intermittently driven film, the combination of an aperture gate, a driving means for said film comprisin a film sprocket, a pair of belts formed 0 coiled springs, pulle s for said belts dis sed to y elding ;l ho d the film against t e gate and the m sprocket as it travels over the same, said belts being driven by said film sprocket, pivoted suports for said pulleys, and springs for holdmg said supports in their operative positions. k

4. In a motion picture apparatus of the class described, comprising an intermittent ly driven film, the combination of an aperture ate, a driving means for said film comprisin a film sprocket, formed 0 coiled springs,

s for said belts disposed to yleldmglly ho d the film against the gate and the travels over the same.

5. In a motion picture apparatus of the class described, comprising an intermittently driven film, the combination of an aperture gate, a driving means for said film comprisin a film sprocket disposed at the lower end 0 the gate, a resilient belt, pulleys for said belt disposedso that the belt, enga the film as it travels across the gate m sprocket as it an over the film sprocket, pivoted suprts for said pulleys, mg said supports in tions.

6. In a motion picture apparatus of the class described, comprising an intermittently driven film, the combination of an aperture gate, a driving means for said film comprising a, film spzocklet, a resilient belt, peulleys for said It disposed so that the lt engages the film as it travels across the gate and over the film sprocket, said belt being driven b said film sprocket.

7. In a device 0? the character described, in combination, a film engaging and moving sprocket, an a rture gate on one side of the sprocket, a :0 er on the other side of the sprocket, and a feeding belt passing around said roller and before the aperture gate.

8. In a device of the character described, in combination, a film engaging and movi rocket, an aperture gate on one side 0 t sprocket, a roller ,on the other side of the sprocket, and a feeding belt pasing around said roller and before the aperture and springs for holdtheir. operative posigzze, said sprocket and belt being driven at v t same linear speed.

9. In a device of the character described, in wmbinatlon, a & engaging and movmg sprocke an a ure gate of the sprocket, a roller on the the sprocket, and a feeding belt passing around said roller and before the aperture a air of belts ull on one side other side of and means for holding said belt against the sprocket.

10. Ina device of the character described, in combination, a film moving sprocket, an aperture ate on one side of the sprocket, and a f ing belt engaging the sprocket at the side opposite to the aperture gate and.

said belt passing around thebefore the aperture gate.

11. In a device of the character described, in combination, an aperture gate, a roller on one side of the gate, a film sprocket on the other side of the gate, said roller and sprocket being disposed on opposite ends sprocket and of the gate, with the adjacent extreme ends of their perimeter substantially in a common plane with the aperture gate, a second feed roller on the side of the sprocket opposite to that on'which the aperture gate is coated, and a feeding belt passing around said two rollers.

12. In a motion picture apparatus of the class described, in combination, an aperture gate, film driving and guiding means com= prising a sprocket and a movable belt disposedso thatthe belt engages the film as it travels across the gate an over the film sprocket and retains the film in position against the sprocket and before the aperture gate.

13. In a motion picture apparatus of the class described, in combination, an aperture gate, film driving and guiding means comprising a sprocket and a posed so that the belt engages the film as it travels across the gate and over the film sprocket and retains against the sprocket and before the aperture gate, said belt being driven synchronously with said film sprocket.

14. In a motion picture apparatus of the class described, in combination, an aperture gate, film driving and gui means comprising a sprocket and a. mova le belt dis "so that the belt engages the film as it travels across the gate and over the film sprocket and retains the film in position against the rocket and before the aperture gate, said be t being driven by said film.

15. In amotion picture apparatus of the class described, in combination, an aperture gate, driving means for said film comprising a film sprocket, a belt, pulleys for said belt one of said pullevs being adjacent and to the rear of said sprocket so that the belt engages movable belt disthe film in position the film as it travels across the gate and over the procket, said pulleys being yieldably supported in their operative positions.

16. In a motion picture apparatus of the class described, in combination, an aperture gate, driving means for said film com rismg a film sprocket, a resilient belt, pu ys for said belt one of said pulleys being adjacent and to the rear of saidsprocket so that the belt engages the film as it travels across bination of a member therein through which the beam of light is the gate and over the sprocket, said pulleys being yieldably supported in their operative positions.

17. In a movin picture machine, the comlength thereof by engagement with said therein through which the formed of coiled spring moving means, said guiding devices being driven synchronously with the film.

18. In a moving picture machine, the combination of a member having an opening therein through which a. beam of light is projected, means for. moving a film intermittently, and a moving yieldingly resistantly expansible guiding means arranged and constructed for guiding the film past the opening and into contact-with the film moving means. v

19. In a motion picture machine, the combination of a. member having an opening therein through which the beam of light is projected, means for moving a'film intermittently and a moving film guiding means engaging said film moving means and material.

20. In a moving picture machine, the combination of a member having an o ning beam of llght is projected, means for moving a film intermittently and a belt engaging said film moving means and formed of coiled spring material for guiding the film.

21. In a moving picture machine, the combination of a member having an opening therein through which thebeam of. light is projected, means for moving a film across the opening, and means for guiding said film having an opening past said opening and into contact with said film moving means.

22. In a moving picture machine, the combination of a member having an opening therein through which the beam of light is projected, means for moving a film intermittently, and means movable synchronously with the film moving means for moving and guiding said film past said opening and into contactwith said film moving means.

23. In a. motion picture apparatus of the class described, in combination, an aperture gate, film driving and guiding means comprising a'sp'rocket and a belt, means for supporting the belt upon said gate and said sprocket so that it engages the film as the latter travels across the gate and over the film sprocket.

24. In a motion picture apparatus of the character described, in combination, an aperture gate, a sprocket at one end of the gate for driving the film strip, and a belt -for guiding the film strip along said gate and into operative engagement with said driv-- ing sprocket.

25. In a motion picture apparatus of the character described, in combination, an aperture gate, a sprocket at one end of the gate for driving the film strip, and a resilientbelt for guiding the film strip along said gate and into operative engagement with said driving sprocket.

26. In a motion picture apparatus of the character described, in combination, an aperture gate having a curved face, a sprocket at one end of the gate for driving the film strip, and a belt for guiding the film strip along the curved face of said gate and into operative engagement with said driving sprocket.

RALPH PULLIAN DE VAULT. 

